D12721: Add GUI editor for R backend

[Alexander Semke]

asemke added a comment.


  Hard-coding to 'kate' is not a good idea. It's better to find a way to determine the default application for "*.txt" on the used linux desktop or on Windows or on Mac OS X.
  QDesktopServices::openUrl() opens the file with the default application. Maybe we can check Qt's source code here to see how the default application is determined or used an already available function in Qt or in KF5.

REPOSITORY
  R55 Cantor

REVISION DETAIL
  https://phabricator.kde.org/D12721

To: sirgienko, #cantor, asemke
Cc: #cantor, #kde_edu, narvaez, apol
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